Definition of lazy jack in English:

lazy jack

noun

Sailing

词汇	lazy jack
释义	Definition of lazy jack in English: lazy jack noun Sailing A small rope extending vertically from the topping lift to the boom for holding a fore-and-aft sail when it is being taken down. 〔航海〕栏帆索 Example sentencesExamples The fully battened main has lazy jacks which make raising and lowering the sail a simple task. The lazy jacks contain the bunt of the sail, so there's no need to tie off the individual reef pendants. Additionally, the lazy jacks prevent the boom and sails from falling all over everyone in the cockpit. With lazy jacks it might make sense to run the main halyard and topping lift aft to the cockpit. You simply lower the halyard, let the sail settle between the lazy jacks into the cover, and zip the cover closed.
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